Ramadan (Arabic:is the ninth month of the Islamic calendar, and the month in which the Qur''an was revealed. Ramadan is the holiest of months in the Islamic calendar, and fasting in this month is one of the Five Pillars of Islam. The month is spent by Muslims fasting during the daylight hours from dawn to sunset. The name came from the time before the Islamic calendar, when the month of Ramadan fell in the summer. Furthermore, Muhammad told his followers that the gates of Heaven would be open all the month and the gates of Hell (Jahannam) would be closed[citation needed]. The first day of the next month, Shawwal, is spent in celebrations and is observed as the "Festival of Breaking Fast" or `Eid ul-Fitr''.